An alternative approach for the prediction of the behaviour and resistance of structural elements.

预测结构元件的行为和阻力的替代方法。

• 批准号: RGPIN-2017-04498
• 负责人: Boissonnade, Nicolas
• 金额: $ 1.53万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=677379
• 关键词: alternative; approach; prediction; behaviour; resistance

The proposed research program addresses the behavior, resistance and design of steel sections and members. As a response to a fundamental need for (i) improved, quicker, simpler and mechanically-based design approaches and (ii) advanced design tools (software), the main objective consists in developing an innovative, alternative approach, the Overall Interaction Concept (O.I.C.). The O.I.C. has emerged as the most appropriate approach, offering a sound theoretical framework to structural elements made of current and future materials. It was though and built to (i) improve actual design practice, (ii) increase accuracy, (iii) advance simplicity and consistency, and (iv) provide a sound framework for computer-assisted resistance predictions. In the middle to long term, this approach shall supersede all design standards, not only in Canada but also worldwide.****In this respect, the applicant has initiated in 2012 a dedicated international research consortium called S.T.S.S., involving both academic and industrial partners. Significant advances have already been achieved, in particular with respect to the design of hollow section members, where the O.I.C. was shown to yield excellent results. The research works detailed herein therefore logically fit into continuous and consistent developments, and are relative to (i) open section members (hot-rolled or welded, standard steel grades and high strength steels), (ii) materials with a non-linear stress-strain response for which current mechanical models are not appropriate and (iii) the influence of shear stresses on resistance, by means of an O.I.C. approach.****Several test series on both sections and members are foreseen, as well as extensive non linear shell F.E. simulations. Consequently, extensive training of highly qualified personnel is of prime importance, and will take place in an international context, under the S.T.S.S. umbrella. The proposed investigations shall also benefit from the principal investigator's wide international experience and collaborations, as well as commitments in several experts technical and normative committees.****In the long term, O.I.C.-based design approaches shall significantly impact both scientific developments, standards evolution and daily design practice.***

拟议的研究计划涉及钢型材和构件的性能、抗力和设计。作为对(I)改进、更快、更简单和以机械为基础的设计方法和(Ii)先进设计工具(软件)的基本需要的回应，主要目标在于开发一种创新的替代办法，即总体互动概念。国际奥委会已经成为最合适的方法，它为由当前和未来材料制成的结构构件提供了一个健全的理论框架。它的目的是(I)改进实际设计实践，(Ii)提高准确性，(Iii)提高简单性和一致性，以及(Iv)为计算机辅助耐药性预测提供一个健全的框架。在中长期内，这种方法将取代所有设计标准，不仅是加拿大的，而且是全世界的。*在这方面，申请人于2012年发起了一个专门的国际研究联盟，名为S.T.S.S.，包括学术和工业合作伙伴。已经取得了重大进展，特别是在中空截面构件的设计方面，其中O.I.C.被证明产生了极好的结果。因此，本文详细的研究工作在逻辑上符合连续和一致的发展，涉及(I)开口截面构件(热轧或焊接、标准钢种和高强度钢)，(Ii)具有非线性应力-应变响应的材料，目前的力学模型不适用于这些材料，以及(Iii)剪切应力对阻力的影响，通过O.I.C.方法。*预测了关于截面和构件的几个试验系列，以及广泛的非线性壳体有限元模拟。因此，对高素质人员的广泛培训至关重要，并将在国际背景下，在S.T.S.S.的框架下进行。拟议的调查还应受益于首席调查员广泛的国际经验和合作，以及几个专家技术和规范委员会的承诺。*从长远来看，基于O.I.C.的设计方法将对科学发展、标准演变和日常设计实践产生重大影响。